Scaffolding.



No. 898,368. PATENTED SEPT. 8, 1908. G. E. HUMPHRIES.

SGAFFOLDING. APBLIOATION FILED SEPT.18, 1907. RENEWED AUG. 10, 1908.

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UNITED STATES PATENT oEEIoE.

GEORGE E. HUMPHRIES, OF WELLINGTON, NEW ZEAIJAND.

SCAFFOLDING.

Application filed September 18, 1907, Serial No. 393,467.

Specification of Letters Pate Patented Sept. 8, 1908.

Renewed Au usrjloe 1908. Serial No. 447,825.

tion.

My invention relates to improvements in scaffolding, and it consists inthe constructions, combinations and arrangements herein described andclaimed.

An object of my invention is to provide an improved construction bywhich scaffold platforms can be rigidly and strongly secured in anydesired positions on building walls, or other similar supports.

A further object of my invention is to provide a system of scaffolding,capable of being conveniently attached to a building wall, and in whichthe scaffold platforms can be quickly adjusted to provide any desiredchange of position.

A further object of my invention is to provide a simple construction ofscaffolding, adapted to be readily assembled in position and to stronglyand rigidly support the adjustable scaffold platforms.

In the accompanying drawings, forming a part of this application and inwhich similar reference numerals indicate corresponding parts in theseveral viewsFigure 1 is a detail perspective View illustrating oneembodiment of my invention; Fig. 2 is a fragmen tary plan view on theline 22 of Fig. 1; Fig. 3 is a detail side elevation of the adjustableclip and floor bar support, illustrating a slight modification in whichthe upright standard is provided with a series of serrations; and Fig. 4is a detail side elevation, showing a preferred means of detachablyconnecting sections of the upright standards Referring to the drawings,1 indicates an upright standard having a pair of bolts 2 extendingthrough one end thereof and carrying wing nuts 3. The other end of saidstandard is provided with an end slot 4 and a keyhole slot 5 forreceiving the heads 6 of the bolts 2 carried by another standard 7 whenit is desired to secure the latter in position on the standard 1. Thestandard 7 is preferably provided with a bolt 8 adapted to rest on thetop of the standard 1, and provided with a wing nut 9 for clamping it inposition.

The standards are shownformed of angle iron with the seciiriflg bolt 8extending at right angles to the securing bolts 6; thereby providing aquickly detachable means for strongly and rigidly securing the standardstogether.

A plurality of bands 10 are slidably mounted on the standard toconstitute adjustable clips. A downwardly tapered wedge 11 is held byeach clip seated aganist the adjacent faces of the standard for lockingsaid clip in position upon forcing said wedge downward in the latter.The upper end of each wedge carries an offset portion 12 to provide aseat 13 for receiving supporting bars; said oflset portion having ascrew 14 threaded therethrough for securing the bars on said seat.

Fig. 3 shows a construction in which one web of the angle bar isserrated to provide a series of horizontal shoulders 15 and with a clip10 provided with an inclined interior face 16 for fitting snugly againstthe inclined faces of said serrations when the clip is wedged inposition. This modification provides a construction in which the clipsare positively locked against accidental shifting under the action ofexcessive loads or shocks on the scaffold platform.

A floor bar 17 is supported on the seat 13 of the wedge and has itsouter end extending somewhat beyond the seat and provided with aperforation 18. As shown especially in Figs. 1 and 2, the floor bar 17has the vertical faces of its inner end tapered at 19 for readyinsertion in the building wall 20, and provided with a downwardlyextending pointed lug 21 for securely anchoring said floor bar to thebuilding wall.

An extension bar 22 is supported in the seat 13 against the floor bar,and overlaps the latter throughout a portion of its length; the innerend of said extension bar being provided with a lug 23 for engaging thebottom edge of the floor bar to prevent relative tilting of said bars onthe seat 13. The extension bar may carry a bolt 24 in position to extendthrough the opening 18 in the floor bar for further locking said barsrigidly together.

The wedge 11 carries a perforated lug 25 at its lower end, whichprevents accidental displacement, or withdrawal, of said wedge from theclip 10. A tie rod 26 is hooked through the perforation in said lug 25and extended back at an angle to the building wall 20, where it issecured by any suitable means. I prefer to so secure the inner end ofthe tie rod by an anchor pin 27 provided with an eye 28 intermediate ofits ends. This provides a convenient construction by which the anchorpin can be readily driven into the building wall and removed therefrom.If desired, auxiliary floor bars 29 may be secured to the building wallbetween adjacent floor bars 17. The outer-ends of said bars aresupported on a U shaped bracket 30 which is adjusted along a screw 31 bya hand nut 32. The upper end of said screw being provided with a pointedhook 33 for firmly securing and supporting it on the top edge of afender board 34 of the scaffold platform 35. I prefer to form theU-shaped bracket of different widths on the two sides of the screw 31,whereby auxiliary bars 29 of two difierent standard sizes can be snuglyseated on said bracket.

I have illustrated and described preferred and satisfactoryconstructions, but, obviously, changes could be made within the spiritand scope of my invention.

Having thus described my invention, what I claim as new therein anddesire to secure by Letters Patent is z" 1. In scaffolding, thecombination of an upright standard, clips adjustably mounted on saidstandard, floor bars provided with means for securing them to a support,extension bars overlapping said floor bars ad jacent said standards,shiftable means carried by said clips for locking the latter in theiradjusted positions, and seats on said shiftable means for supporting theoverlaping portions of said floor bars and extension bars, whereby saidclips will be locked by the weight on said bars, substantially asdescribed.

2. In scaffolding, the combination of an upright standard, clipsadjustably mounted on said standard, floor bars provided with means forsecuring them to a support, extension bars overlapping said floor barsadj acent said standards, lugs carried by the inner ends of saidextension bars for, engaging the bottoms of said floor bars, shiftablemeans carried by said clips for locking the latter in their adjustedpositions, and seats on said shiftable means for supporting theoverlapping portions of said floor bars and extension bars, whereby saidclips will be locked by the weight on said bars, substantially asdescribed.

3. In scaffolding, the combination of an upright standard, clipsadjustably mounted on said standard, floor bars provided with means forsecuring them to a support, extension bars overlap ing said floor barsadjacent said standarc s, wedges slidably carried by said clips forengagingsaid standards, and seats on the upper ends of said wedges forsupporting the overlapping portions of said floor bars and extensionbars, substantially as described.

4. In scafiolding, the combination of an upright standard provided witha series of' on said standard, floor bars provided with means forsecuring them to a support, extension bars overlap ing said-floor barsadjacent said standarc s, wedges slidably carried by said clips forengaging said standards, seats on the upper ends of said wedges forsupporting the overlapping portions of said floor bars and extensionbars, and means for locking said bars in said seats, substantially asdescribed.

6. In scaffolding, the combination of an upright standard, clipsadjustably mounted on said standard, floor bars provided with means forsecuring their rear ends to a suport, shiftable means carried by saidclips for locking the latter in their adjusted positions on saidstandard, seats on said shiftable means for supporting said floor bars,and tie rods extending angularly from said shiftable means to saidsupport, substantially as described.

7. In scaffolding, the combination of an upright standard, clipsadjustably mounted on said standard, floor bars provided with means forsecuring their rear ends to a support, wedges slidably carried by saidclip for engaging said standards, seats on said wedges for supportingsaid floor bars, and tie rods connecting said wedges to said support,substantially as described.

8. In scaffolding, the combination of an upright standard, clipsadjustably mounted on said standard, floor bars provided with means forsecuring their rear ends to a support, wedges slidably carried by saidclip for engaging said standards, seats on said wedges for supportingsaid floor bars, perforated lugs on said wedges for preventingaccidental dis lacement of the latter from said clips, an tie rodsconnecting said perforated lugs to said support, substantially asdescribed.

9. In scaffolding, the combination of an upright standard, clipsadjustably mounted on said standard, floor bars provided with means forsecuring their rear ends to a support, wedges slidably carried by saidclip for engaging said standards, seats on said wedges for supportingsaid floor bars, perforated lugs on said Wedges for preventingaccidental displacement of the latter from said clips, tie rodsconnected at their outer ends to said lugs, and anchor pins providedWith eyes intermediate their ends for securing the inner ends of saidtie rods to said support, substantially as described. i

In testimony whereof I affix my signature in presence of two wltnesses.

GEORGE E. HUMPHRIES.

Witnesses:

PAUL F. GROVE, E. A. PANABAKER.

